Valve-stem guard



Feb. 6, 1923. m mgsw C. L. GANDY VALVE STEM GUARD FILED DEc. 23, 1920Patented at. c, 31923.

UNHTED STATES PATENT creme.

CHARLES L. GANDY, OF MOUNT AUBURN, ILLINOIS.

VALVE-STEM GUARD.

Application'filed. December 23, 1920. Serial No. 432,743.

, nate any possibility of sand or moisture entering between the innertube and casing of a tire, through the valve stem opening. A furtherobject of the invention is to provide a guard of this character whichwill brace the valve stem at a point adjacent to its connection with theinner tube associated therewith, to prevent movement of the valve stemwith respect to the inner tube.

With the foregoing and other objects in.

view which will appear as the description proceeds, the inventionresides in the combination and arrangement of parts and in the detailsof construction hereinafter described and claimed, it. being understoodthat changes in the precise embodiment of the invention hereindisclosed, may be made within the scope of what is claimed, withoutdeparting from the spirit of the invention.

Referring to the drawing:

Figure 1 illustrates a sectional view through a rim and inner tube,showing the invention as applied.

Figure 2 illustrates a plan view of the guard.

Referring to the drawing in detail, the reference character 5 designatesthe felloe of a motor vehicle wheel, which is sup-plied with the usualvalve stem opening to accommodate the usual valve stem which in thepresent showing is indicated in the drawing at 6.

The inner tube of a tireis indicated at 7 which inner tube is secured tothe valve stem 6, by means of the-usual bridge 8 and clamping nut 8 thatcooperates with the head 9 of the valve stem.

Mounted on the valve stem 6 is the guard 10 forming an important featureof the invention, which guard is formed preferably of rubber and isprovided with a central opening 11 to receive the valve stem 6, theopening 11 being relatively small as compared with the stem 6, so thatthe walls of the opening will closely engage the stem and preventmoisture from entering the tire, between the stem and stem opening, itbeing obvious that a. fluid-tight connection is formed between the stemand guard.

The guard is also provided with, a relatively fiat rim engaging surface12 designed to contact with the inner edge of the rim to insure awater-tight connection at this point, while the opposed surface of theguard is shown as curved as art 13, or dome-shaped to allow the guard togive under the pressure of the securin nut 14 operating on the stem. 6,and at the same time provide sloping surfaces to contact with thatportion of the inner tube adjacent to the valve stem and hold the innertube out of contact with the side edges of the bridgewa sher.

From the foregoing it is obvious that the guard may be readily andeasily applied to the usual tire constructions, now in use, and that thesame will guard the space between the valve stem and the valve stemopening to exclude all foreign matter.

Having thus described the invention, what is claimed as new is:

In a guard adapted for use with tire valve stems, and bridge washersassociated therewith, a body portion formed of rubber material andhaving a relatively flat circular rim engaging surface and having adomeshaped opposed surface, the dome-shaped surface of the guard adaptedto lie under the bridge washer associated therewith, and said guardadapted to extend beyond the side edges of the bridge. washer, a nut onthe valve stem for securing the guard and bridge washer againstmovement.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

CHARLES L. GANDY.

Witnesses:

W. O. BRAMEL, MAsoN VVIsE.

